Barrel Choices Help (CP, Lapco, or J&J)

Hey,
I am getting into paintball and am prepared to get a new barrel. Right now, I have a Tippmann A-5 w/ R-T with the 8" stock barrel. I mainly play speedball (I know, I know, with an A-5?) and am looking for a good barrel. Here are my three choices:

Custom Products 1 Piece Barrel
12", 14", 16"
.685, .689, .693
$30

Lapco Big Shot
12", 14", 18"
.684, .687, .690
$50

J&J Ceramic Barrel
12", 14"
I don't know the bore size
$35

I usually shoot Valken paint (Infinity, Fate, Crusade).

I'm pretty set on a 14" barrel, but I can't ****ing decide between the barrels and it's slowly killing me.

I don't care about sound, aesthetics, or distance. I want accuracy with a good bore-barrel match.

Which barrel should I buy and, equally importantly, what bore size should I choose (while shooting Valken paint)?

Also, please tell me any other barrel recommendations in this price range.

I have a CP 89 and realized nearly everything i put down it was overbored. So i went went with an underbore to see the other side of the fence.

pumppb.com had lapco make them a barrel, called a tightstick. Its got a 681 bore with a 10in control bore! Which is rediculas, google them. There 45bux right now, best barrel i could find. I shoot valken too

I don't care about sound, aesthetics, or distance. I want accuracy with a good bore-barrel match.

Well shoot, then pretty much any of the barrels you listed will do what you want. Accuracy won't change between the three barrels you listed. As far as a good bore match, that really depends on your paint. Anything in the .684 range would be best.